ryan owens, abc news, dallas. >>> now to the baby face charged with killing his own mother. friday was a chilling first day in court as jurors heard the haunting 911 call on the day of the murder. john muller has been covering the story from the beginning. >> reporter: elizabeth, if day two is anything like the first day, it should be riveting, a medical examiner who looked over those wounds to jeffrey pyne's hands is expected to testify. of key interest those massive blisters on son jeffrey's hands. 22-year-old jeffrey pyne watched stone-faced as prosecutors wasted no time hammering away with their strongest evidence. >> he lied about how he got those. >> reporter: startling photographs of pyne's hands covered with massive blisters. the photograph taken just hours after his mother was found brutally murdered. he's accused of bludgeoning and stabbing ruth pyne inside their suburban michigan home may of 2011. >> he hit her in the back of the head. and he hit her again. >> reporter: pyne's former boss from a farmer's market testified jeffrey got the beliefers on the job throwi